The invention relates to an intelligent operation box in the field of the electric power relay protection technology, comprising a fiber-optical communication interface, a controlling device, a switching value processing module, a switching on processing module and a tripping processing module, wherein, GOOSE message information is exchanged by the controlling device and a process layer network through the fiber-optical communication interface, the controlling device is connected with the switching value processing module to transmit switching value information, the controlling device is respectively connected with the switching on processing module and the tripping processing module to obtain status information of a circuit breaker and carry out tripping and switching on control, input information is collected by the input end of the switching value processing module, an output connection point state is sent out by the output end of the switching value processing module, and the switching on processing module and the tripping processing module are respectively connected with a switching on coil return circuit and a tripping coil return circuit of a circuit breaker operation mechanism. The intelligent operation box solves the electric secondary return circuit status examining and repairing problem and creates necessary conditions for realizing complete status detection of a protection system and status examining and repairing of relay protection.